How To Fix 26329 - More than one row was selected

SAP Error Message - Details

• Message type: E = Error

• Message class: 26 - Dokumentenverwaltung

• Message number: 329

• Message text: More than one row was selected

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 26329 - More than one row was selected ?

  The SAP error message 26329, which states "More than one row was selected," typically occurs in scenarios where a database operation expects a single row to be returned but instead retrieves multiple rows. This can happen in various contexts, such as when using SELECT statements in ABAP programs, function modules, or when working with database views.
  Cause:
  
  Ambiguous Query: The SQL query or ABAP code is not specific enough, leading to multiple rows being returned when only one is expected.
  Data Integrity Issues: The underlying data may not be unique when it should be, causing the query to return multiple results.
  Incorrect Logic: The logic in the program may not properly filter or limit the results, leading to multiple rows being selected.
  
  Solution:
  
  
  Review the Query: Check the SQL query or ABAP code to ensure that it is designed to return a single row. This may involve:
  
  Adding more specific WHERE conditions.
  Using aggregate functions (like MAX, MIN) if appropriate.
  Ensuring that the primary key or unique constraints are correctly applied.
  
  
  
  Use SELECT SINGLE: If you are using a SELECT statement in ABAP, consider using SELECT SINGLE instead of SELECT to ensure that only one row is returned:
  SELECT SINGLE field1, field2 FROM table WHERE condition.
  
  
  Check Data: Investigate the underlying data to ensure that it adheres to the expected uniqueness. If there are duplicates where there shouldn't be, you may need to clean up the data.
  
  
  Debugging: If the issue persists, use debugging tools to step through the code and examine the values being processed. This can help identify where the logic may be failing.
  
  
  Error Handling: Implement error handling in your code to manage situations where multiple rows might be returned, allowing for graceful degradation or informative error messages.
  
  
  Related Information:
  
  Database Design: Ensure that your database schema is designed to enforce uniqueness where necessary, using primary keys and unique constraints.
  Performance Considerations: Be mindful of performance when modifying queries, especially if they are part of larger transactions or reports.
  Documentation: Refer to SAP documentation or community forums for specific examples and best practices related to the error message.
  
  By addressing the root cause of the error and ensuring that your queries are designed to return the expected results, you can resolve the issue effectively.